Factor out the predicate check code from DAGISelEmitter.cpp

and use it in FastISelEmitter.cpp, and make FastISel
subtarget aware. Among other things, this lets it work
properly on x86 targets that don't have SSE, where it
successfully selects x87 instructions.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55156 91177308-0d34-0410-b5e6-96231b3b80d8

utils/TableGen/CodeGenDAGPatterns.h

@@ -444,6 +444,8 @@ struct PatternToMatch {
   TreePatternNode *getDstPattern() const { return DstPattern; }
   const std::vector<Record*> &getDstRegs() const { return Dstregs; }
   unsigned         getAddedComplexity() const { return AddedComplexity; }
+
+  std::string getPredicateCheck() const;
 };